Category Archives: Tutorial

How to Use FFmpeg in Python?

Posted on March 25, 2020 by jdriselvato

Command line one-liners are great for quick and one off FFMPEG experiences but sooner or later you’re going to want to start building custom applications for efficiency. FFMPEG can be used with almost any programming language with a couple of … Continue reading →

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(FFmpeg) What is a ‘codec’? Explained

Posted on March 24, 2020 by jdriselvato

FFMPEG has hundreds of different codecs to edit, convert to and play from. In your journey to mastering FFMPEG you’ll face the word ‘codec’ so often that not understanding what one is, is a disservice to yourself.  Wikipedia explains a … Continue reading →

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How to Configure FFmpeg with Extra Dependencies? –enable

Posted on March 24, 2020 by jdriselvato

Build dependencies are great additions to FFMPEG that makes the program even more powerful. These dependencies link to 3rd party tools that extend functionality or even simplify some processes. In this book there are a couple of audio / video … Continue reading →

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How to merge multiple mp3s into one track with FFmpeg?

Posted on March 23, 2020 by jdriselvato

This is question 80 from my up and coming FFMPEG book, come join the mailing list to stay informed on more FFMPEG tutorials and announcements about the book. Here Merging audio with FFMPEG is one of the most searched questions … Continue reading →

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How to extract all frames (jpg) from a video?

Posted on March 15, 2020 by jdriselvato

Above a list of exported frames NOTE: the ‘frames’ folder must exist else an error will prevent the extraction from completeing.

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(FFmpeg) How to convert FLV to MP4?

Posted on March 13, 2020 by jdriselvato

Remember when flash was a big thing? Well turns out there are still video players online that use Flash Live Video (flv) to stream video. If you run into these files from a download, you might be hard pressed to … Continue reading →

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What I Learned This Month (March, 2016)

Posted on March 15, 2016 by jdriselvato

In working progress! I learn a lot about a lot of different topics each day and I never write it down or help keep track of things I find important. So I’m going to try writing a “What I Learned … Continue reading →

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iOS 7: Custom NavigationView or NavigationViewController

Posted on October 3, 2013 by jdriselvato

This was a tricky one to figure out myself but this covers everything (back arrow color, back button color, title, title color, navigation bar color, transparency, etc). [code] //set bar color [self.navigationController.navigationBar setBarTintColor:[UIColor colorWithRed:85.0/255.0 green:143.0/255.0 blue:220.0/255.0 alpha:1.0]]; //optional, i don’t … Continue reading →

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iOS: Text input on popup dialog box

Posted on February 23, 2013 by jdriselvato

Before iOS 5 there was not an easy way to create a text input box inside a popup dialog box (UIAlertView). So on a project I was working on, I figured out a way to create one. This works with … Continue reading →

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